Playing chicken with the flu.
D000818:Animals; D002487:Centers for Disease Control and Prevention, U.S.; D004196:Disease Outbreaks / Q000517:prevention & control; D014943:Global Health; D006801:Humans; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000453:epidemiology / Q000517:prevention & control / Q000635:transmission*; D014481:United States / Q000453:epidemiology; D014944:World Health Organization; D015047:Zoonoses
D007252:Influenza Vaccines